Biology Quiz for Class 8
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One-liners on biology quiz for class 8 with answers
What is the smallest unit of life? – The cell is the smallest unit of life.
Which cell organelle is known as the powerhouse of the cell? – The mitochondria is known as the
powerhouse of the cell because it produces energy for the cell.
What is the main function of the nucleus? – The main function of the nucleus is to control and regulate cell activities by controlling gene expression.
What is the process by which plants make their own food? – Photosynthesis is the process by which plants make their own food using sunlight, water, and carbon dioxide.
What is the process by which animals break down food to release energy? – Cellular respiration is the process by which animals break down food to release energy.
What is the basic unit of DNA? – The nucleotide is the basic unit of DNA.
What is the genetic material found in all living organisms? – DNA is the genetic material found in all living organisms.
What is the function of chloroplasts in plant cells? – Chloroplasts are responsible for photosynthesis in plant cells.
What are the three types of blood vessels? – The three types of blood vessels are arteries, veins, and capillaries.
Which organ is responsible for filtering waste products from the blood? – The kidneys are responsible for filtering waste products from the blood.
What is the largest organ in the human body? – The skin is the largest organ in the human body.
What is the main function of the respiratory system? – The main function of the respiratory system is to take in oxygen and expel carbon dioxide.
What is the name of the chemical messenger produced by endocrine glands? – Hormones are the chemical messengers produced by endocrine glands.
What is the function of the pancreas in the digestive system? – The pancreas secretes enzymes that help digest food in the small intestine.
What is the name of the process by which cells divide to create new cells? – Mitosis is the name of the process by which cells divide to create new cells.
What is the name of the process by which cells divide to create sex cells? – Meiosis is the name of the process by which cells divide to create sex cells.
What is the name of the fluid that surrounds the fetus during pregnancy? – Amniotic fluid is the name of the fluid that surrounds the fetus during pregnancy.
Biology Quiz for Class 8 continues–
What is the name of the part of the brain that controls balance and coordination? – The cerebellum is the part of the brain that controls balance and coordination.
What is the name of the part of the brain that controls basic functions such as breathing and heartbeat? – The medulla oblongata is the part of the brain that controls basic functions such as breathing and heartbeat.
What is the name of the hormone that regulates blood sugar levels? – Insulin is the name of the hormone that regulates blood sugar levels.
What is the name of the hormone responsible for the fight or flight response? – Adrenaline is the name of the hormone responsible for the fight or flight response.
What is the name of the hormone that regulates sleep and wakefulness? – Melatonin is the name of the hormone that regulates sleep and wakefulness.
What is the name of the process by which plants and animals release excess water vapor? – Transpiration is the name of the process by which plants and animals release excess water vapor.
What is the name of the pigment responsible for skin color? – Melanin is the name of the pigment responsible for skin color.
What is the name of the protein that makes up hair and nails? – Keratin is the name of the protein that makes up hair and nails.
What is the name of the system that controls and coordinates body functions? – The nervous system is the name of the system that controls and coordinates body functions.
What is the name of the system that transports nutrients, oxygen, and waste products throughout the body? – The circulatory system is the name of the system that transports nutrients, oxygen, and waste products throughout the body.
What is the name of the system responsible for removing carbon dioxide and other waste products from the body? – The respiratory system is the name of the system responsible for removing carbon dioxide and other waste products from the body.
What is the name of the system that breaks down food into nutrients? – The digestive system is the name of the system that breaks down food into nutrients.
What is the name of the system that produces hormones and regulates body functions? – The endocrine system is the name of the system that produces hormones and regulates body functions.
What is the name of the system that provides structural support and protects internal organs? – The skeletal system is the name of the system that provides structural support and protects internal organs.
What is the name of the system that allows movement and maintains posture? – The muscular system is the name of the system that allows movement and maintains posture.
What is the name of the process by which plants produce seeds? – Reproduction is the name of the process by which plants produce seeds.
What is the name of the process by which animals produce offspring? – Reproduction is the name of the process by which animals produce offspring.
What is the name of the process by which plants exchange gases with the atmosphere? – Respiration is the name of the process by which plants exchange gases with the atmosphere.
What is the name of the process by which animals exchange gases with the atmosphere? – Respiration is the name of the process by which animals exchange gases with the atmosphere.
What is the name of the system that filters blood and removes waste products from the body? – The urinary system is the name of the system that filters blood and removes waste products from the body.
What is the name of the system that fights off infections and diseases? – The immune system is the name of the system that fights off infections and diseases.
What is the name of the system that regulates body temperature? – The thermoregulatory system is the name of the system that regulates body temperature.
What is the name of the hormone responsible for milk production in females? – Prolactin is the name of the hormone responsible for milk production in females.
What is the name of the hormone responsible for ovulation in females? – Luteinizing hormone (LH) is the name of the hormone responsible for ovulation in females.
What is the name of the hormone responsible for male sexual development? – Testosterone is the name of the hormone responsible for male sexual development.
What is the name of the hormone responsible for female sexual development? – Estrogen is the name of the hormone responsible for female sexual development.
What is the name of the enzyme that breaks down carbohydrates in the mouth? – Amylase is the name of the enzyme that breaks down carbohydrates in the mouth.
What is the name of the enzyme that breaks down protein in the stomach? – Pepsin is the name of the enzyme that breaks down protein in the stomach.
What is the name of the enzyme that breaks down fat in the small intestine? – Lipase is the name of the enzyme that breaks down fat
What is the smallest unit of life? – The cell is the smallest unit of life.
What is the control center of the cell? – The nucleus is the control center of the cell.
What is the powerhouse of the cell? – The mitochondria
What is the name of the structure that connects muscles to bones? –
The name of the structure that connects muscles to bones is a tendon.
What is the name of the pigment that gives skin its color? – Melanin is the name of the pigment that gives skin its color.
What is the name of the cell responsible for carrying oxygen in the blood? – Red blood cells are the cells responsible for carrying oxygen in the blood.
What is the name of the cell responsible for fighting off infections and diseases? – White blood cells are the cells responsible for fighting off infections and diseases.
Biology Quiz for Class 8- Important One-liners
Keratin is a fibrous protein that provides structure and protection to hair, nails, and other parts of the body.
The nervous system includes the brain, spinal cord, and nerves, and controls body functions through electrical signals and chemical messengers called neurotransmitters.
The circulatory system includes the heart, blood vessels, and blood, and transports nutrients, oxygen, and waste products throughout the body.
The respiratory system includes the lungs and airways, and is responsible for breathing in oxygen and breathing out carbon dioxide and other waste products.
The digestive system includes the mouth, esophagus, stomach, small intestine, large intestine, and other organs, and breaks down food into nutrients that can be absorbed by the body.
The endocrine system includes glands such as the pituitary, thyroid, and adrenal glands, and produces hormones that regulate body functions such as growth, metabolism, and reproduction.
The skeletal system includes bones, cartilage, and ligaments, and provides support and protection for the body’s organs and tissues.
The muscular system includes muscles and tendons, and allows movement and maintains posture.
Reproduction in plants involves the production of seeds through the process of pollination and fertilization.
Reproduction in animals involves the production of offspring through sexual or asexual reproduction.
Respiration in plants involves the exchange of gases such as oxygen and carbon dioxide with the atmosphere.
Respiration in animals involves the exchange of gases such as oxygen and carbon dioxide with the atmosphere through breathing.
The urinary system includes the kidneys, ureters, bladder, and urethra, and filters blood to remove waste products and excess fluid from the body as urine.
The immune system includes cells such as white blood cells and organs such as the spleen and thymus, and defends the body against infections and diseases.
The thermoregulatory system includes mechanisms such as sweating and shivering, and regulates body temperature to maintain homeostasis.
Prolactin is a hormone produced by the pituitary gland that stimulates milk production in females.
Luteinizing hormone (LH) is a hormone produced by the pituitary gland that triggers ovulation in females.
Testosterone is a hormone produced by the testes that is responsible for male sexual development and the development of male secondary sex characteristics.
Estrogen is a hormone produced by the ovaries that is responsible for female sexual development and the development of female secondary sex characteristics.
Amylase is an enzyme produced by the salivary glands and pancreas that breaks down carbohydrates such as starch in the mouth and small intestine.
Pepsin is an enzyme produced by the stomach that breaks down proteins into smaller peptides and amino acids.
Lipase is an enzyme produced by the pancreas and small intestine that breaks down fats into fatty acids and glycerol.
Melanin is a pigment produced by melanocytes in the skin and protects the skin from the harmful effects of UV radiation.
Red blood cells, also known as erythrocytes, contain hemoglobin and transport oxygen from the lungs to the body’s tissues.
White blood cells, also known as leukocytes, come in several types and are responsible for recognizing and fighting off infections and diseases in the body.
Biology Quiz for Class 8
Biology Quiz for Class 8 video
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